Counterfeit phones often report 16GB in the OS settings, but the partition table only shows a 4GB user area. The SData tool fixes the metadata to match the physical NAND size.

| Error Message | Solution | | :--- | :--- | | | Reinstall SPD drivers. Try a USB 2.0 port. | | "Partition Write Failed" | Your NAND chip has bad blocks. Lower target to 8GB. | | "Checksum Mismatch" | Redownload the tool. Your EXE is corrupted. | | Phone is now dead (Black screen) | You selected the wrong partition config. Use Research Download Tool to flash full factory firmware (Pac file). |

: Storage size is determined by the physical number of memory cells on a device; software cannot "add pages" to a physical notebook.